Prof. P. Nihal Dayawansa

Prof. P. Nihal Dayawansa

Professor in Zoology

Department of Zoology and Environment Sciences,
University of Colombo,
Colombo 03,
Sri Lanka.
Room: 209
Work Phone: +94112158379

Academic and Professional qualifications

BSc. (Hon) Zoology Special (University of Colombo)

PhD. Behavioural Ecology (University of Aberdeen, UK)

FI Biol. Fellow of Institute of Biology

C. Biol. Chartered Biologist


Teaching areas

  • Animal Behaviour
  • Ecology
  • Ornithology
  • Wildlife Management
  • Behavioural Ecology
  • Conservation Biology

Research interests

  • Conservation Biology
  • Behavioural Ecology


Research Gate


  Recent Books and Chapters of Books

  • Dayawansa P. N. (2016) Bula Bebe- A Beginners Guide to the Butterfly Watching in Fiji Fiji National University – ISBN 978-955-41408-6-8
  • Dayawansa P. N. (2016) A Pocket Guide to the Butterflies of Fiji- Author PublicationISBN 978-955-41408-6-9
  • Dayawansa P. N and Udagama P. V. (2016) Kota’s Nature: A tribute to Prof. Sarath Wimalabandara Kotagama- Department of Zoology and Environment Sciences, University of Colombo – ISBN 978-955-41408-7-5
  • Dayawansa P. N. (2014) Envitoons, An Inspirational Approach of Teaching and Awareness towards Nature Education and Environmental Studies SLCSL Environment Education Guide 1- Sustainability Learning Centre Sri Lanka – ISBN 978-955-0836-00-0
  • Dayawansa Nihal (2014) Guide for Student Counselors: Highlighting the use of nature for training, Kline Publishers –  ISBN 978-955-41408-3-7
  • Dayawansa P.N. (2014) Fieldcraft: Essential of Nature Interpretation for Nature Education and Environmental Studies, SLCSL Environment Education Guide 2- e-Book Sustainability Learning Centre Sri Lanka – ISBN 978-955-41408-4-4

  Recent Research Publications

  • Alwis N., Perera P. K. P. and Dayawansa P. N. (2016) The Response of Tropical Avifauna to Visitor Recreational Disturbances:  A Case from the Sinharaja World Heritage Forest, Sri Lanka Journal of Avifaunal Research Vol.  3 (3)
  • Jayarathne, C,  Perera P. K. P. and Dayawansa P. N. (2015) A Preliminary study of behaviour of Rusty Spotted cat Prionailurus rubiginosus in captivity  Wildlanka Vol. 3 (1) pp 1-11
  • Surathissa D.M. and Dayawansa P. N. (2013) University Museums in Sri Lanka
  • University Museums and Collections (UMAC) Journal pp 67-69
  • V.A. Kulasena, R.P.V.J. Rajapakse J.P. Dubey, P.N. Dayawansa, and S. Premawansa (2011) Seroprevalence of Toxoplasma gondii in Cats from Colombo, Sri Lanka Journal of Parasitology Vol.97(1)
  • Two new species of Lankascincus (Squamata: Sincidae) from Sri Pada sanctuary, Sri Lanka. Mendis-Wickramasinghe L. J., Rodrigo R., Dayawansa N. and Jayantha U L D (2007) Zootaxa 1612, 1-24.
  • Wijesinghe, Mayuri R. and Dayawansa, P. N. (2002). The amphibian fauna at two altitudes in the Sinharaja rainforest, Sri Lanka.  Herpetological Journal, UK Vol. 12, pp 175-178.
  • Weerakoon, D. K., Goonathilake, W. L. D. P. T. S. de A., Dayawansa, P. N. and Wijesinghe Mayuri R. (1999) List of Threatened Fauna of Sri Lanka. In. The 1999 List of Threatened Fauna & flora of Sri Lanka, IUCN, Colombo, Sri Lanka pp 9-69.
  • Wijesinghe, Mayuri R. and Dayawansa, P. N. (1998) A New Anti-predatory Behaviour Strategy in Stilts Suggestive of Adaptive Evolution. Journal of South Asian Natural History Vol. 3 No. 2.
  • Bopitiya, D, Dayawansa, P. N. and Kotagama, S. W. (1998) The Impact of Domestic Cattle and Buffalo on the Status of the Bundala National Park In. Irrigation Water Management and the Bundala National Park. Eds. Matsuno, Y, Hoek, W. and Ranawaka, M. International Watershed Management Institute pp 21-24.
  • Siriwardhane, M., Dayawansa, N., Fernando, P, Perera, R. and Kotagama, S. W. (1995) Fauna of Madu Ganga Islets Bulletin of Oriental Bird Club, UK .
  • Fernando, P. and Dayawansa, P. N. (1994) Description of the Larval Stages and Notes on the Reproduction of Polypedates longinasus (Ahl, 1927) (Amphibia, Rhacophoridae) Journal of South Asian Natural History Vol. 1 No. 2.
  • Fernando, P., Dayawansa, P. N. and Siriwardena, M. (1994) A New Toad Species (Bufo kotagami) from Sinharaja Man and Biosphere Reserve, A Tropical Rain Forest in Sri Lanka Journal of South Asian Natural History Vol.  1 No. 1.

On-going Research Projects

  • Behavioural Ecology of Crows in Urban Environs
  • Behavioural Ecology of Pangolin in the Wet Zone
  • Influence of garbage dumping on avifauna